The 2010 Linux Storage and Filesystem Summit, day 2

The 2010 Linux Storage and Filesystem Summit, day 2

Posted Aug 24, 2010 21:06 UTC (Tue) by jpnp (subscriber, #63341)
In reply to: The 2010 Linux Storage and Filesystem Summit, day 2 by tytso
Parent article: The 2010 Linux Storage and Filesystem Summit, day 2

There are other possibilities, such as a network block device connected a server which uses multiple disks via an MD software RAID device, but your nbd server becomes a single point of failure. In theory at least an enterprise storage array has many more redundancies and can survive a controller card or hard drive failure, even though the enterprise storage array itself is still a single point of failure.

Probably the most relevant option outside of enterprise SAN devices is DRBD. It's not mainline yet, but is quite widely used by smaller setups, offers no single point of failure, and provides a good substrate to run clustered file systems such as GFS/OCFS2, at least in 2 node systems.

John

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